터미널로만 깃헙 작업하기중 not a valid object name: 'master' 만나쪙

이유 : 한번도 커밋을 안해서 그런거라고 한당 ㅇ_<

 

➜  studySpace0115 git:(master) ✗ git remote add origin https://github.com/ddoqi/studySpace.git
➜  studySpace0115 git:(master) ✗ git branch
➜  studySpace0115 git:(master) ✗ git branch dev
fatal: not a valid object name: 'master'
➜  studySpace0115 git:(master) ✗ git commit -m "initial commit"
On branch master

Initial commit

Untracked files:
  (use "git add <file>..." to include in what will be committed)
	.DS_Store
	javaScript/
	typeScript/

nothing added to commit but untracked files present (use "git add" to track)
➜  studySpace0115 git:(master) ✗ git add .
➜  studySpace0115 git:(master) ✗ git commit -m "initial commit"
[master (root-commit) 730b271] initial commit
 4 files changed, 32 insertions(+)
 create mode 100644 .DS_Store
 create mode 100644 javaScript/.DS_Store
 create mode 100644 javaScript/weekStudy/study1.js
 create mode 100644 typeScript/.DS_Store
➜  studySpace0115 git:(master)✗ git push -u origin master